Join a loveable cast of animated friends as Driver Dan goes on an exciting journey to Story Corner. Everyone knows that the Vrooms can go really fast and that they always win every race against their Story Train friends. But Milly and Lily have created a special way of running, and they challenge the Vrooms to a race around the Story Train. Driver Dan starts the race and everyone is amazed when they see that Milly and Lily are the fastest! Milly and Lily giggle at their game, and then Tallulah does some very clever thinking to work out what the running trick is and who really is the fastest after all. Featuring the story Slow Down!